Stamp



FIG. 1 is a front, left side and top perspective view of a stamp showing my new design;

FIG. 2 is a front, left side and top perspective view thereof, showing its two parts separated;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational thereof;

FIG. 6 is a left side elevational thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a stamp, as shown and described. 